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bool_typ is a type, but it needs to syntactically be a type boolean,
，这一点在51吃瓜中也有详细论述
Uncapitalize[S: Literal[str]]: uncapitalize a string literal
q = x @ self.wq
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Early physical attractiveness predicts a more socially effective personality in adulthood. Early physical appearance may serve as a slight but consistent predictor of how well a person navigates social situations later in life.
· 李娜 · 来源：tutorial资讯